This poll was conducted by Mason-Dixon Polling & Research Inc. of Washington, D.C., on Tuesday and Wednesday. A total of 625 registered Colorado voters were interviewed statewide by telephone. All stated they were likely to vote in the general election.

Mason-Dixon's Virginia, Florida and Colorado polls are in. Nevada, Ohio, Missouri and North Carolina are still out there to be found.

Edits:Teaser: "A new Mason-Dixon poll of likely voters in eight battleground states shows that Obama leads in Colorado, Florida, Nevada, Pennsylvania and Virginia. For his part, McCain is ahead in Missouri, North Carolina and Ohio."

More: "In none of those states, however, does the leading candidate beat the pollís 4-point margin of error. Pennsylvania joins Virginia with 9 percent undecided voters, which is the highest number of undecideds among those battleground states."

"Of undecided voters in Virginia, the poll reveals 93 percent are white and 75 percent do not live in Northern Virginia."